Adjustable window ventilator



Jan. 6, 1953 c. F. MERGNER ADJUSTABLE WINDOW VENTILATOR Filed March 28,1951 Patented Jan. 6, 12953 UNITED STATESv PATENT OFFICE ApplicationMarch 28, 1951, Serial No. 218,018

2 Claims.

This invention relates to window ventilators of the telescopic striptype that areY adjustable in length so as to fit under partially'openwindows of diierent widths. Particularly is the invention an improvementin the shutter type of Ventilator in which an adjustable shuttercontrols the amount of Ventilating opening.

A primary object of this invention is to provide a ventilator of thistype which is simple and inexpensive, easy to store, convenient tomanipulate and eiective for its purpose.

Preferably embodiments of the invention consist of three sheet metalsections which have open channels formed on the top and bottom edges oftheir rear faces proportioned so that the end section channels t andtelescope into the channels of the central section, and at vshutterpieces slidably i'lt in the channels of the end pieces and areadjustable toward and from each other over the inner face of the centralsection. The central section has Ventilating louvers formed in it andthe shutters therefore control the amount of Ventilating opening.

Other features of the invention will appear from the followingdescription of the embodiment of the invention illustrated in thedrawings, in which Fig. 1 is a front elevation of a Ventilator embodyingthe invention, shown disposed in operative relation to a window in itsframe.

Fig. 2 is a rear elevation of the ventilator on a larger scale.

Fig. 3 is a View similar to Fig. 2 but with the shutters in a differentadjustment.

Fig. 4 is an enlarged transverse section on the line 4-4 of Fig. 2.

In Fig. 1 the ventilator is shown in place in the opening of a windowframe l with the window sash I l closed down on it.

The Ventilator consists of three flat telescopic sections suitably madefrom, sheet metal. One feature of the constructionwhich makes forconvenience in storage is that the sections may readily be taken apart,and they may be as readily telescopcally assembled.

The central section l2 may be and preferably is somewhat longer than theend sections, and it y has Ventilating openings I3 in it, preferably ofthe louver type formed by the forward displacement of the metalimmediately above slits, thus leaving the rear face of the sectionplain. Along its top and bottom edges the metal of the section isflanged rearwardly and again toward the center to form opposinglongitudinal open guide channels or grooves I4 and l5.

The two end sections I6 and Il are similar plane, elongated, sheet metalmembers, preferably imperforate, folded rearwardly along Vtheir top andbottom edges to form opposed open channels l8 and I9 on section I6 andsimilar channels 20 and 2| on section Il. The end sections are formednarrower than the center section by substantially double the thicknessof the metal and the channels on the end sections have an external widthequal to the internal width of the channels on the center section.Consequently the end sections telescope into the center section with asnug lit, as indicated in Fig. 4.

The channels on the end sections are open sufliciently to receive andguide sliding shutters. As shown there are two shutters 22 and 23, onetting in the channels of each end section. These shutters are plain,flat strips, indicated in the drawing as composed of wood thoughobviously any suitable material may be used. They are of the properwidth and thickness to t in the guide grooves of the end sectionchannels and are of a length such that they may meet at the middle ofthe central section and still have a substantial portion of their outerends contained in the end section channels. Thus they may be adjusted tocover the louvers more or less and so regulate the amount of Ventilatingopening, being spaced from the plane inner face of the center sectionmerely by the thickness of the sheet metal and hence forming aneffective closure.

It will be appreciated that with this construction there is freedom ofsliding movement of the parts and an absence of tendency to bind. Thechannels stiffen the metal parts against warping or twisting andconstitute excellent runners for telescoping and for guiding theshutters. The proportions are so designed that in the most contractedadjustment of the ventilator, the end sections will not overlap thelouvers and the shutters can be made to meet at the middle withoutleaving the end section guide grooves in the most expanded condition ofthe Ventilator.

As will be obvious to those skilled in the art, there are variousrespects in which the precise details of the construction illustrated inthe drawings and above particularly described may be modied withoutdeparting from the principle and scope of the invention as defined inthe following claims.

What is claimed is:

1. A sectional window Ventilator comprising a central elongated sectioncontaining longitudinal louver openings and having its top and bottomedges rearwardly flanged into opposing channels,

two similar end sections having their top and bottom edges rearwardlyflanged into opposing channels of a size to lt and telescope into thechannels of the central section and operative when in extended positionto maintain the ventilator in the window opening and proportioned inlength so that they do not overlap the louvers when in said extendedposition, and a flat shutter piece slidably tting in the channel of eachend section and longitudinally adjustable on the rear face of theventilator to control the extent of louver opening, the length of eachshutter piece extending half the length of the center section.

2. A window ventilator composed of three sheet metal telescopicallyadjustable sections, the cen-- tral section having outwardly projectingventilating louvers formed therein and having its top and bottom edgesshaped into rearwardly disposed opposing guide channels and having aplane inner facethe two end sections being plane members with rearwardlydisposed channels on their top and bottom edges proportioned to t and ibe telescopically guided in the channels of the central section andoperative when in extended position to maintain the ventilator in thewindow opening and proportioned in length so that they do not overlapthe louvers when in said extended position, and a at shutter pieceslidably tting in the channel of each of the end sections and adjustablein the channel in immediate proximity with the said plane inner face,the length of each shutter piece exceeding half' the length of thecenter section.

CLARENCE F. MERGNER.

REFERENCES CITED The following references are of record in the le ofthis patent:

UNITED STATES PATENTS Number Name Date 20 1,616,297 Alber Feb. 1, 19271,676,251 Clay July 10; 1928 2,355,536y Jenness Aug. 8, 1944 2,524,230yMartin Oct. 3, 1950

